<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="dom.js"></script>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<button id="btnAdd" type="button">Add</button>
<button id="btnRemove" type="button">Remove</button>
<div></div>

</body>
</html>